Engine



. L. WILUAMS.

ENGINE.

APPLICATION FILED DEC. 5. 1914 RENEWED OCT. 11.19%9- Piltmlted Nov. 25,1919.

3 SHEET$-SHEET 2.

igs-i; .2

M. L. WSLLIAMS.

ENGINE.

APPLICATION HLED DEC-5, 19M. RENEWED OCT. 11. \9l9.

Patented Nov. 25, 1919.

3 SHEETS-SHEET 3- 1 iiiii) 47 5 92 159 UNITED STATES PATENT OFFICE.

MARTIN L. WILLIAMS, OF SOUTH BEND, INDIANA, ASSIGNOR, BY MESNEASSIGNMENTS, TO AMERICAN SLEEVE-VALVE MOTOR COMPANY, A CORPORATION OFDELAWARE.

ENGINE.

Specification 01' Letters Patent.

Patented Nov. 25, 1919.

Original application filed April 18, 1913, Serial No. 761,930. Dividedand this application filed December 5,

1914, Serial No. 875,625.

To all whom it may concern:

Be it known that I, MARTIN L. WILLIAMS, a citizen of the United States,residing in the city of South Bend, county of St. J0- seph, and State ofIndiana, have invented certain new and useful Improvements in Engines,of which the following is a specification.

This application is a divisional application of an original filedApril18th, 1913, Serial No. 761,930.

This invention relates to improvements in engines and refers moreparticularly to the actuating mechanism for operating the valvemechanism of a four cycle gas engine.

Among the salient objects of the invention are to provide a constructionin which the valve ports of. each cylinder are controlled by a singlerotary valve all of which valves are actuated by a'common driving memberwhich is bodily adjustable; to provide a novel arrangement of valveactuating mechanism interposed between the crank shaft and valve sleeveswhich mechanism is inclosed in a suitable casing whereby it can bereadily lubricated and ke t clean; to provide a construction in WlllGh'the gearing which is connected to the sleeves and the worm shaftmechanism which drives the gearing can be readily assembled and is soarranged as to avoid the necessity of too great nicety of adjustment andin general to provide improved mechanism of the character referred to.

In the drawings Figure 1 is a view partly in side elevation and partlyin vertical section of my improved engine;

Fig. 2 is a transverse vertical sectional view;

Fig. 3 is an enlarged detail view of the worm shaft and associatedparts;

Fig. 4 is an end view of the shaft shown in Fig. 3 with parts brokenaway to disclose certain details of construction; Fig. 5 is a detail onan enlarged scale of the worm shaft adjusting mechanism.

Referring to the draw1ngs 1 desi ates as a whole the crank case, 2 theera shaft and 3 the fly wheel. The crank is mounted in suitable bearings4, 5, and 6. The lower end of the crank case serves as an oil pan 7provided with oil troughs 8, 8. At the upper end the crank RenewedOctober 17, 1919. Serial No. 331,495.

casing provided with a cylinder base 9 on w 1011 are supported thecylinders 10, 10. These cylinders are preferabl constructed in pairs asshown, for examp e, in Fig. 1. These pairs of cylinders may each beremoved independently of the other.

With each cylinder 10 is mounted the piston 11 connected by piston rod13 to the crank 2 in any well known manner. Between cach cylinder 10 andpiston 11 is interposed a rotary valve sleeve 12 open at either end andextending the full length of the cylinder. To the lower end of eachrotary valve sleeve 12 is secured a worm wheel 14, hereinafter moreparticularly described. In order to lubricate the various operatingparts of the engine, in the upper part of the crank casing is formed asupplemental oil or lubricating chamber 46 which extends entirely aroundthe base just below the lower ends of the four cylinders, asshown moreclearly in Figs. 1 and 2. Oil is delivered to this chamber from the mainsupply chamber of oil reservoir 7 by means of a supply conduit 47 castintegrally with the upper and lower half of the crank case. Adjacent therear pair of cylinders, this lubricating chamber 46 is provided with anenlarged extension 48 which is provided with a gear pump 49. The lattercomprises a pair of gears 50 and 51 mounted on trunnlons 52, and 53journaled in suitable bearings. The trunnion of the shaft 53 of the gearis provided with an extension 53' carryin a spiral gear 54 which mesheswith anot er s iral gear 55 mounted on a main worm sliaft 56. The pumpis provided with inlet ports 57 communicating with the'conduit 47 andwith an outlet 58 communicating with the supplemental lubricatingchamber 46. The main object of the supplemental oil chamber 46 is thatthe worm shaft 56 which drives the rotary valve sleeves in the mannerhereinafter described, shall be constantly incased in'oil.

The outlet 58 is controlled by ported valve sleeves 58' and 59 leadingto the oil chamber 46. The sleeve 58" rotates and has a port 60 adaptedto register with the port 59'. This latter sleeve 58 is rotatablyjournaled in the stationary sleeve and is provided with an operatingshaft 61' manually controlled by lever arm 62 leading to any convenientplace' To prevent leakage a washer 63 is interposed between a flange 64'and the threaded nut 65. B adjusting the rotary sleeve the supply 0 oilfrom the pump can be readily controlled.

Describing now the manner of rotating the rotary valve sleeves, thewormshaft 50, heretofore referred to is mounted on suitable bearings 86,87 and 88. The rear end of the shaft 56 is mounted in a thrust bearing89 of well known construction. At its front end the worm shaft isprovided with a pair of interlocking gears 90 and 91, the formerreceiving the lm belt 84 for driving the fan and water pump. The lattercar 91 is connected directly to the crank s aft by a link belt 92, andgear 93, the latter bein mounted on the front end of the crank shaft.

Means are also provided for bodily adjusting the worm shaft in itscasing. Accordingly, in the front end of the worm shaft is rigidlymounted a male gear 94 intermeshin with female gear 95, the latter beingbodily adjustable on the male gear and carrying the cars 90 and 91. Thegears 94 and 95 areocked in adjusted position by means of lock nut 96and cotter key 97. On the worm shaft 56 are mounted four worm gears 98,98. Each worm gear is pro vided at both ends with a conical counterboredortion 99 adapted to receive the conical ends 100 of lock nuts 101.These lock nuts are internally threaded as shown at 102 to engagethreaded portions 103 .on the worm shaft. By the arran ement justdescribed the worms can be a justed endwise on the worm shaft, ifnecessary, and then positively locked in such adjusted position.

The flange 45 on the lower end of each sleeve is provided with threecircumferentially spaced notched portions 104 adapted to register withthe locking dogs 105 carried by a worm wheel 106. The worm 107 of eachworm wheel 106 intermeshes with the corresponding worm wheels 98 and isthus driven b the rotation of the worm shaft. Preferab y, the lower endsof each worm wheel 106 are grovided with a lurality of oil ducts 108. yreference to l ig. 2 it will be seen that these worm wheels are allinclosed in the supplemental oil chamber. In-

asmuch as the various orts in the rotary valve sleeve are all spaceequi-distant apart, and the lockin recess 104 and locking dogs 105 aresimilar y spaced, the sleeve must of necessity be fitted in properposition.

I claim as my invention:

1. In a gas engine, the combination with a plurality of cyllnders eachhaving a piston and a ported rotary valve sleeve, of a crank casing and.crank shaft therein, a worm shaft, gearing connecting said worm shaft tosaid sleeves, means for bodily adjustin said worm shaft, means for aduSting said gearing, and connections between said crank shaft and saidworm shaft.

2. In a gas engine, the combination with a plurality of cylinders eachhaving a piston and a ported rotary valve sleeve, of a crank casing andcrank shaft therein, a second shaft, gearing connecting said secondshaft to said sleeves, means for bodil adjusting said second shaft,means for ad uSting said gearing, and connections between said crankshaft and said second shaft.

3. In a gas en ine, the combination with a plurality of cylinders, eachhaving a piston and a ported rotary valve sleeve, of a crank casing andcrank shaft therein, a worm shaft, a worm gear thereon for each sleeve,means for adjustin each ear and said shaft, means for locking sai gearin adjusted position, a worm wheel on the lower end of each sleevemeshing with the corresponding worm gear and connections between theworm sha t and the crank shaft.

4. In a gas engine, the combination with a plurality of cylinders eachhaving a piston and a ported rotary valve sleeve, of a crank casing anda crank shaft therein, a driving shaft, means for bodily adjusting saidlatter shaft, driving mem ers, means for adjusting said driving membersrelative to said driving shaft and connections between each drivingmember and a corresponding sleeve.

MARTIN L. WILLIAMS.

Witnesses:

J OYGE M. Low,

0. B. BELKNAP.

